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Explorative study into a simplified numerical evaluation of the bending capacity of rebar reinforced steel fibre reinforced concrete beams during fire exposure

Ning Xiliang, Ruben Van Coile (UGent) and Luc Taerwe (UGent)
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Abstract
A simplified 2D numerical model for evaluating the bending capacity of rebar reinforced steel fibre reinforced concrete (R/SFRC) beams during fire is presented. Distinct material properties of steel fibre reinforced concrete (SFRC) and reinforcing steel bars are considered. The SFRC is treated as a homogeneous concrete “composite” which combines the advantages of the compression capacity of concrete and the tension capacity of fibre elements. Three steps are associated with the numerical model for evaluating the fire resistance of R/SFRC beams. Firstly, a fire temperature calculation. Secondly, thermal analysis evaluating the temperature inside the concrete cross-section in function of time. And finally, the structural analysis where the temperature dependent material properties are taken into account. The developed model for the bending capacity of R/SFRC beams is validated with test results, which demonstrates that the proposed numerical model captures the fire resistance of R/SFRC beams with reasonable accuracy.
Keywords
fire, steel fibre reinforcement, modelling, bending capacity

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MLA
Xiliang, Ning, Ruben Van Coile, and Luc Taerwe. “Explorative Study into a Simplified Numerical Evaluation of the Bending Capacity of Rebar Reinforced Steel Fibre Reinforced Concrete Beams During Fire Exposure.” Proceedings of ASFE 2019. 2019. Print.
APA
Xiliang, N., Van Coile, R., & Taerwe, L. (2019). Explorative study into a simplified numerical evaluation of the bending capacity of rebar reinforced steel fibre reinforced concrete beams during fire exposure. Proceedings of ASFE 2019. Presented at the 6th international conference on Applications of Structural Fire Engineering (AFSE  ’19).
Chicago author-date
Xiliang, Ning, Ruben Van Coile, and Luc Taerwe. 2019. “Explorative Study into a Simplified Numerical Evaluation of the Bending Capacity of Rebar Reinforced Steel Fibre Reinforced Concrete Beams During Fire Exposure.” In Proceedings of ASFE 2019.
Chicago author-date (all authors)
Xiliang, Ning, Ruben Van Coile, and Luc Taerwe. 2019. “Explorative Study into a Simplified Numerical Evaluation of the Bending Capacity of Rebar Reinforced Steel Fibre Reinforced Concrete Beams During Fire Exposure.” In Proceedings of ASFE 2019.
Vancouver
1.
Xiliang N, Van Coile R, Taerwe L. Explorative study into a simplified numerical evaluation of the bending capacity of rebar reinforced steel fibre reinforced concrete beams during fire exposure. Proceedings of ASFE 2019. 2019.
IEEE
[1]
N. Xiliang, R. Van Coile, and L. Taerwe, “Explorative study into a simplified numerical evaluation of the bending capacity of rebar reinforced steel fibre reinforced concrete beams during fire exposure,” in Proceedings of ASFE 2019, Singapore, 2019.
@inproceedings{8620797,
  abstract     = {A simplified 2D numerical model for evaluating the bending capacity of rebar reinforced steel fibre reinforced concrete (R/SFRC) beams during fire is presented. Distinct material properties of steel fibre reinforced concrete (SFRC) and reinforcing steel bars are considered. The SFRC is treated as a homogeneous concrete “composite” which combines the advantages of the compression capacity of concrete and the tension capacity of fibre elements. Three steps are associated with the numerical model for evaluating the fire resistance of R/SFRC beams. Firstly, a fire temperature calculation. Secondly, thermal analysis evaluating the temperature inside the concrete cross-section in function of time. And finally, the structural analysis where the temperature dependent material properties are taken into account. The developed model for the bending capacity of R/SFRC beams is validated with test results, which demonstrates that the proposed numerical model captures the fire resistance of R/SFRC beams with reasonable accuracy. },
  author       = {Xiliang, Ning and Van Coile, Ruben and Taerwe, Luc},
  booktitle    = {Proceedings of ASFE 2019},
  keywords     = {fire,steel fibre reinforcement,modelling,bending capacity},
  language     = {eng},
  location     = {Singapore},
  pages        = {6},
  title        = {Explorative study into a simplified numerical evaluation of the bending capacity of rebar reinforced steel fibre reinforced concrete beams during fire exposure},
  year         = {2019},
}